Shade-holder for incandescent electric lamps.



J. WEBER.

SHADE HOLDER FOR INGANDESGENT ELECTRIC LAMPS.

APPLICATION FILED JULY 21, 1905.

904,821 Patented Nov. 24, 1908.

moan STATES P i rnn'r onrton.

JOl-IX WEBER, S011 ENEOTADY, NEW YORK, ASSIGNUR TO AUGUST WEBER, Sit, UF

SCHENEG'IADY, NEW YORK.

SHADE-HOLDER FOB INCANDESCENT'ELECTRIC LAMPS.

Specification of Letters Patent.

Patented Nov. 24, 1908 Application filed July 21, 1905. Serial No. 270,619.

To all whom it may concern:

Be it known that I, Jonx Wanna. a citizen of the United States, residing at Schenectady, county of Schenectady, and State of New York. have invented certain newand useful Improvements in Shade-Holders for liu-andescent. Electric Lamps, of which the following is a specification.

The invention relates to such improvements and consists of the. novel construction and combination of parts hereinatter described and subsequently claimed. i Reference may be had to the accompanying drawings. and the reference charm-ters marked thereon. which form a part ol' this specification.

Similar characters refer to similar parts in the several figures therein.

Figure l of the drawings is a view in side elevation of my improved incandescent electric. lamp socket with a shade-holder attached thereto embodying my invention. Fig. 2 is a top plan view of the shade-holder detached. Fig. 23 is a side elevation ot' the laiupsockct with the shade-holder detached thcrci'rom. Fig. l is a vertical section taken on the broken line t -l in Fig. 1 through the interlocking mechanism where by the shade-holder is mounted upon the hoop-socket.

The principal object of the invention is to provide for easily and quickly attaching a shade-holder to an incandescent electric lamp socket; which socket is constructed to be used either with or without such a shadeholder.

'lhe lamp-socket is composed in part of the body. I. and cap. 2. preferably made of sheet meta and ot general cylindrical Form,

The bony of the socket terminates at its outer end in a c \".lindrical tlange 3; extending "from its outer cud to a stitl'ening bead. t, which extends circiuu'l'ercntially of said body.

The cylindrical end or llange. 3. of the socket-body has a. plurality of projections, (3. formed on its exterior. as by slitting the sheet. metal circinn'l'erentially for a short distance and forcing outwardly a portion of the metal shell on the outer side of such slit. the projection thus formed terminating abruptly at its inner end at said slit and inclining outwardly therefrom toward the outer end of the sleeve as shown in Fig. l.

The shade-holder, 7, has an annular rim,

S, and a cylindrical hub. 9. all preferably formed of sheet metal.

The rim. 8. is aperturcd at three symmetrically disposed points to receive the clamping screws. 10. which engage with the flange on the lamp-shade in the usual manner, said shade being omitted from the. drawings.

The huh. 9. of the shade-holder is of a diameter adapted to telescopically receive and tightly fit. the outer cylindrical end or flange. E). of the lamp-socket. body, and said lmb is provided with apertures, 11, arranged to correspond with the. position of the projections. (t. on the lamp-socket body and adapted to receive said projections respectively when the parts are telescopically applied to each other. Said projections being inclined from the outer end of the socket. body toward their inner ends whereat they terminate abruptly. the shadediolder hub can be tclcscopicall; applied to the end ot the socket body and when the apertures. 11. in the hub are brought opposite the respective projections on the body the parts will automatically interlock with a snap action. and when so interlocked the abruptly termi- Hating: ends ol' said projections etl'ectnally prevent accidental separation of the shadeholdcr from the socket-body. The connectin; members themselves thus provide the means whereby they are locked together dispensing: with .thc use of screws or other additional parts f r that. purpose.

13y locating, the projections. 6. adjacent to the st illening' flange. 4. I am able to render itvery dillicult to remove the shade-holder after the same has been once. applied to the lamp socket. as it. is practically impossible to compress the outer end or flange, 3. ol the. lamp-socket body so that when the shade holder has been once applied to the socket the connection is a substantially permanent.

one.

To facilitate the application of the shadeholder to the lamp-socket body in proper position for the projections, (2, to enter the apertures, 11, as well as to prevent a rotative mormnent of one of the interlocked parts upon the other whereby their disengagement might be accomplished. I form on one of said parts, as the lamp-socket, an offset, 12, and provide the other of said parts, as the hub of the shade holder, with an open slot, 13. adapted to receive said ollsetwhen the parts are in such position that tle projec- 

